Jannine Ramirez had just won a karate competition when she arrived at her Fresno apartment and heard 18-year-old Wilberto Zapata in the bathroom.
Police say Zapata recently moved into the apartment complex and mistakenly went into the wrong apartment unit early Sunday.
The Fresno Bee (http://bit.ly/TqOStf ) says the 20-year-old woman knocked down the bathroom door and kicked the stranger through a shower door before landing a series of punches until he was out of the apartment.
Zapata was cited for unlawful entry into a home and released.
Source: Associated Press